<!DOCTYPE html>
<html lang="zh">

<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>系统维护中</title>
  <style>
    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
      margin: 0;
      padding: 0;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
      color: #333;
    }

    .container {
      text-align: center;
      background: white;
      padding: 60px 40px;
      border-radius: 16px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
      max-width: 500px;
    }

    h1 {
      color: #e74c3c;
      margin-bottom: 16px;
      font-size: 2.2em;
    }

    p {
      font-size: 1.2em;
      color: #555;
      margin-bottom: 24px;
    }

    .reload {
      display: inline-block;
      margin-top: 20px;
      color: #fff;
      background-color: #3498db;
      padding: 10px 24px;
      border-radius: 6px;
      text-decoration: none;
      transition: background 0.3s;
    }

    .reload:hover {
      background-color: #2980b9;
    }
  </style>
  <script>
    // 每隔 30 秒尝试自动刷新一次页面
    setTimeout(() => {
      location.reload();
    }, 30000);
  </script>
</head>

<body>
  <div class="container">
    <h1>🔧 系统维护中</h1>
    <p>我们正在对服务器进行升级维护，暂时无法访问服务。</p>
    <p>请稍后重试，感谢您的理解与支持！</p>
    <a href="#" class="reload" onclick="location.reload(); return false;">点击刷新</a>
  </div>
</body>

</html>